Accuracy of three pre- and intraoperative measurement techniques for osteotomy positioning in the tibial plateau levelling procedure

H. Mossman; D.J. F. von Pfeil; M. Nicholson; H. Phelps; E. Morris; R. Bradley; J. Taylor; A. Langenbach

doi:10.3415/VCOT-14-12-0188

Veterinary and Comparative Orthopaedics and Traumatology, Table of Contents

Vet Comp Orthop Traumatol 2015; 28(04): 250-255
DOI: 10.3415/VCOT-14-12-0188

Original Research

Schattauer GmbH

Accuracy of three pre- and intraoperative measurement techniques for osteotomy positioning in the tibial plateau levelling procedure

Authors

H. Mossman

¹Veterinary Surgical Centers, Vienna, VA, USA
D.J. F. von Pfeil

²Friendship Surgical Specialists of the Friendship Hospital for Animals, Washington, DC, USA
M. Nicholson

³Central Animal and Referral Emergency Hospital, Fredricksburg, VA, USA
H. Phelps

⁴CARE Veterinary Center, Frederick, MD, USA
E. Morris

⁵Veterinary Surgical Referral Practice of Northern Virginia, Manassas, VA, USA
R. Bradley

⁵Veterinary Surgical Referral Practice of Northern Virginia, Manassas, VA, USA
J. Taylor

⁶Veterinary Surgical Centers, Leesburg, VA, USA
A. Langenbach

¹Veterinary Surgical Centers, Vienna, VA, USA

Abstract

Summary

Objectives: To prospectively compare the accuracy of three preoperative measurement techniques in tibial plateau levelling osteo -tomy (TPLO) planning.

Methods: Fifty-nine dogs were randomly assigned to one of three measurement techniques; A, B or C. Surgeons measured the intended osteotomy location on preoperative radiographs according to the assigned technique. Measurements were used intra-operatively during osteotomy placement. Postoperative measurements were made by a single blinded observer and compared to preoperative measurements.

Results: Fifty-one dogs were included for final statistical analysis. The mean absolute differences between pre- and postoperative measurements was 1.72 mm ± 0.958, 1.79 mm ± 1.010, and 3.56 mm ± 1.839, for techniques A, B and C, respectively. No significant differences were identified for patient age, gender, limb or surgeon. Techniques A and B were not significantly different (p = 0.8799). Techniques A and B were significantly more accurate than C (p = 0.0001 and p = 0.0003, respectively). Weight was significantly different among the groups (p = 0.047) but the statistical results did not change when an adjustment was made for bodyweight (p = 0.4971, p <0.001 and p = 0.0007, respectively).

Clinical significance: Preoperative measuring for planning a TPLO osteotomy is recommended. Techniques A and B in the current study were clinically practical and significantly more accurate compared to technique C.

Keywords

Cranial cruciate ligament - tibial plateau levelling osteotomy - accuracy - dog - stifle

Full Text

References

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